12 May 2019
⇐20190511 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190513⇒

NOAA
2 Active Regions
12740
12741

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24N60
(-193",843") 		E65-W54
(119) 		2.6 0.9 3.9e21
2 W38S68
(215",-867") 		E49-W50
(99) 		1.8 -1.1 -5.2e21
3 W08N33
(117",560") 		W01-W15
(14) 		0.8 0.6 1.7e20
4 W13N08
(217",186") 		W12-W15
(3) 		0.0 2.3 2.0e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 12-May-2019 22:00 UT .